As environmental awareness grows, so do questions about the environmental impact of photography, in particular traditional film development and processing, which includes the use of plastics, gelatine and other environmentally harmful chemicals notwithstanding water usage and waste. Pioneering practice and research into sustainable alternatives to conventional processes has quickly established, supported by organisations such as The Sustainable Darkroom. Students in Higher Education are environmentally aware and prepared to take action to mitigate their impacts where possible. As such, there is a coalescence of perceptions within and beyond the classroom which asks to be addressed in the curriculum. This paper draws upon the research project Under a Green Light: A Darkroom for the Future which investigated how university darkroom practices can pivot toward more environmentally friendly methods. The paper describes the learning environment of the darkroom as a space of slowness, immersion and experimentation and the pedagogic value of this for photography students. The paper argues that incorporating environmental awareness into day-to-day teaching through systemic changes to process and practice, rather than through short term curriculum interventions, contributes to transformative learning experiences and promotes positive long-term change.